Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

CW8386 Thermopolis (C8386)

Lat: 43.64283°NLon: 108.227°WElev: 4419.52ft.

NA

50°F

10°C

Humidity 40%
Wind Speed N 8 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 19 May 10:10 AM MDT
Extended Forecast for

4 Miles SSW East Thermopolis WY

Freeze Warning May 19, 09:00pm until May 20, 08:00am
Click here for hazard details and duration
Freeze Warning
  • Today

    Today: Sunny, with a high near 58. South southeast wind 5 to 10 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Breezy, with a south wind 8 to 15 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Light south southwest wind increasing to 5 to 9 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. South wind 5 to 9 mph becoming calm  after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, with thunderstorms also possible after noon.  High near 56. Breezy, with a light north wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 22 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 37. North wind 9 to 14 mph becoming light and variable  after midnight. Winds could gust as high as 21 mph.

    Low: 37 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 67. Light and variable wind becoming south around 6 mph in the morning.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 58. South southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 34. Breezy, with a south wind 8 to 15 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 67. Light south southwest wind increasing to 5 to 9 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 40. South wind 5 to 9 mph becoming calm after midnight.
Thursday
Showers, with thunderstorms also possible after noon. High near 56. Breezy, with a light north wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 37. North wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Friday
Mostly sunny, with a high near 67. Light and variable wind becoming south around 6 mph in the morning.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 51.
Memorial Day
Sunny, with a high near 86. Breezy.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW East Thermopolis WY
 43.6°N 108.22°W (Elev. 4495 ft)
9:32 am MDT May 19, 2026
10am MDT May 19, 2026-6pm MDT May 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database